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Message-ID: <CAPDyKFoQs4Bmd=5vgB6NUr81FnVYPk1k4Z_8pn6KayS5aNQtUA@mail.gmail.com>
Date: Mon, 28 Sep 2020 15:37:14 +0200
From: Ulf Hansson <ulf.hansson@...aro.org>
To: Wenbin Mei <wenbin.mei@...iatek.com>
Cc: Rob Herring <robh+dt@...nel.org>,
Chaotian Jing <chaotian.jing@...iatek.com>,
Matthias Brugger <matthias.bgg@...il.com>,
"linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
DTML <devicetree@...r.kernel.org>,
Linux ARM <linux-arm-kernel@...ts.infradead.org>,
"moderated list:ARM/Mediatek SoC support"
<linux-mediatek@...ts.infradead.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
srv_heupstream <srv_heupstream@...iatek.com>
Subject: Re: [PATCH v2 1/4] dt-bindings: mmc: Convert mtk-sd to json-schema
On Mon, 28 Sep 2020 at 15:12, Wenbin Mei <wenbin.mei@...iatek.com> wrote:
>
> Convert the mtk-sd binding to DT schema format using json-schema.
>
> Signed-off-by: Wenbin Mei <wenbin.mei@...iatek.com>
> Reviewed-by: Ulf Hansson <ulf.hansson@...aro.org>
Please, don't add reviewed-by tags during an ongoing review, unless
the reviewer explicitly states that the change looks good. The same
applies to patch 2 in this series.
No need to resend this time because of this, but please keep this in
mind when going forward.
Kind regards
Uffe
> ---
> .../devicetree/bindings/mmc/mtk-sd.txt | 75 --------
> .../devicetree/bindings/mmc/mtk-sd.yaml | 165 ++++++++++++++++++
> 2 files changed, 165 insertions(+), 75 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/mmc/mtk-sd.txt
> create mode 100644 Documentation/devicetree/bindings/mmc/mtk-sd.yaml
>
> diff --git a/Documentation/devicetree/bindings/mmc/mtk-sd.txt b/Documentation/devicetree/bindings/mmc/mtk-sd.txt
> deleted file mode 100644
> index 26a8f320a156..000000000000
> --- a/Documentation/devicetree/bindings/mmc/mtk-sd.txt
> +++ /dev/null
> @@ -1,75 +0,0 @@
> -* MTK MMC controller
> -
> -The MTK MSDC can act as a MMC controller
> -to support MMC, SD, and SDIO types of memory cards.
> -
> -This file documents differences between the core properties in mmc.txt
> -and the properties used by the msdc driver.
> -
> -Required properties:
> -- compatible: value should be either of the following.
> - "mediatek,mt8135-mmc": for mmc host ip compatible with mt8135
> - "mediatek,mt8173-mmc": for mmc host ip compatible with mt8173
> - "mediatek,mt8183-mmc": for mmc host ip compatible with mt8183
> - "mediatek,mt8516-mmc": for mmc host ip compatible with mt8516
> - "mediatek,mt6779-mmc": for mmc host ip compatible with mt6779
> - "mediatek,mt2701-mmc": for mmc host ip compatible with mt2701
> - "mediatek,mt2712-mmc": for mmc host ip compatible with mt2712
> - "mediatek,mt7622-mmc": for MT7622 SoC
> - "mediatek,mt7623-mmc", "mediatek,mt2701-mmc": for MT7623 SoC
> - "mediatek,mt7620-mmc", for MT7621 SoC (and others)
> -
> -- reg: physical base address of the controller and length
> -- interrupts: Should contain MSDC interrupt number
> -- clocks: Should contain phandle for the clock feeding the MMC controller
> -- clock-names: Should contain the following:
> - "source" - source clock (required)
> - "hclk" - HCLK which used for host (required)
> - "source_cg" - independent source clock gate (required for MT2712)
> - "bus_clk" - bus clock used for internal register access (required for MT2712 MSDC0/3)
> -- pinctrl-names: should be "default", "state_uhs"
> -- pinctrl-0: should contain default/high speed pin ctrl
> -- pinctrl-1: should contain uhs mode pin ctrl
> -- vmmc-supply: power to the Core
> -- vqmmc-supply: power to the IO
> -
> -Optional properties:
> -- assigned-clocks: PLL of the source clock
> -- assigned-clock-parents: parent of source clock, used for HS400 mode to get 400Mhz source clock
> -- hs400-ds-delay: HS400 DS delay setting
> -- mediatek,hs200-cmd-int-delay: HS200 command internal delay setting.
> - This field has total 32 stages.
> - The value is an integer from 0 to 31.
> -- mediatek,hs400-cmd-int-delay: HS400 command internal delay setting
> - This field has total 32 stages.
> - The value is an integer from 0 to 31.
> -- mediatek,hs400-cmd-resp-sel-rising: HS400 command response sample selection
> - If present,HS400 command responses are sampled on rising edges.
> - If not present,HS400 command responses are sampled on falling edges.
> -- mediatek,latch-ck: Some SoCs do not support enhance_rx, need set correct latch-ck to avoid data crc
> - error caused by stop clock(fifo full)
> - Valid range = [0:0x7]. if not present, default value is 0.
> - applied to compatible "mediatek,mt2701-mmc".
> -- resets: Phandle and reset specifier pair to softreset line of MSDC IP.
> -- reset-names: Should be "hrst".
> -
> -Examples:
> -mmc0: mmc@...30000 {
> - compatible = "mediatek,mt8173-mmc", "mediatek,mt8135-mmc";
> - reg = <0 0x11230000 0 0x108>;
> - interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_LOW>;
> - vmmc-supply = <&mt6397_vemc_3v3_reg>;
> - vqmmc-supply = <&mt6397_vio18_reg>;
> - clocks = <&pericfg CLK_PERI_MSDC30_0>,
> - <&topckgen CLK_TOP_MSDC50_0_H_SEL>;
> - clock-names = "source", "hclk";
> - pinctrl-names = "default", "state_uhs";
> - pinctrl-0 = <&mmc0_pins_default>;
> - pinctrl-1 = <&mmc0_pins_uhs>;
> - assigned-clocks = <&topckgen CLK_TOP_MSDC50_0_SEL>;
> - assigned-clock-parents = <&topckgen CLK_TOP_MSDCPLL_D2>;
> - hs400-ds-delay = <0x14015>;
> - mediatek,hs200-cmd-int-delay = <26>;
> - mediatek,hs400-cmd-int-delay = <14>;
> - mediatek,hs400-cmd-resp-sel-rising;
> -};
> diff --git a/Documentation/devicetree/bindings/mmc/mtk-sd.yaml b/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
> new file mode 100644
> index 000000000000..2d5ab1411cd5
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
> @@ -0,0 +1,165 @@
> +# MTK-License-Identifier: GPL-2.0
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/mmc/mtk-sd.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: MTK MSDC Storage Host Controller Binding
> +
> +maintainers:
> + - Ulf Hansson <ulf.hansson@...aro.org>
> +
> +allOf:
> + - $ref: mmc-controller.yaml#
> +
> +properties:
> + compatible:
> + oneOf:
> + - const: mediatek,mt8135-mmc
> + - const: mediatek,mt8173-mmc
> + - const: mediatek,mt8183-mmc
> + - const: mediatek,mt8516-mmc
> + - const: mediatek,mt6779-mmc
> + - const: mediatek,mt2701-mmc
> + - const: mediatek,mt2712-mmc
> + - const: mediatek,mt7622-mmc
> + - items:
> + - const: mediatek,mt7623-mmc
> + - const: mediatek,mt2701-mmc
> + - const: mediatek,mt7620-mmc
> +
> + reg:
> + description:
> + physical base address of the controller and length.
> + minItems: 1
> + maxItems: 2
> +
> + interrupts:
> + description:
> + Should contain MSDC interrupt number.
> + maxItems: 1
> +
> + clocks:
> + description:
> + Should contain phandle for the clock feeding the MMC controller.
> + minItems: 2
> + maxItems: 4
> + items:
> + - description: source clock (required).
> + - description: HCLK which used for host (required).
> + - description: independent source clock gate (required for MT2712).
> + - description: bus clock used for internal register access (required for MT2712 MSDC0/3).
> +
> + clock-names:
> + minItems: 2
> + maxItems: 4
> + items:
> + - const: source
> + - const: hclk
> + - const: source_cg
> + - const: bus_clk
> +
> + pinctrl-names:
> + items:
> + - const: default
> + - const: state_uhs
> +
> + pinctrl-0:
> + description:
> + should contain default/high speed pin ctrl.
> + maxItems: 1
> +
> + pinctrl-1:
> + description:
> + should contain uhs mode pin ctrl.
> + maxItems: 1
> +
> + vmmc-supply:
> + description:
> + power to the Core.
> +
> + vqmmc-supply:
> + description:
> + power to the IO.
> +
> + assigned-clocks:
> + description:
> + PLL of the source clock.
> +
> + assigned-clock-parents:
> + description:
> + parent of source clock, used for HS400 mode to get 400Mhz source clock.
> +
> + hs400-ds-delay:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description:
> + HS400 DS delay setting.
> +
> + mediatek,hs200-cmd-int-delay:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description:
> + HS200 command internal delay setting.
> + This field has total 32 stages.
> + The value is an integer from 0 to 31.
> +
> + mediatek,hs400-cmd-int-delay:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description:
> + HS400 command internal delay setting.
> + This field has total 32 stages.
> + The value is an integer from 0 to 31.
> +
> + mediatek,hs400-cmd-resp-sel-rising:
> + $ref: /schemas/types.yaml#/definitions/flag
> + description:
> + HS400 command response sample selection.
> + If present, HS400 command responses are sampled on rising edges.
> + If not present, HS400 command responses are sampled on falling edges.
> +
> + mediatek,latch-ck:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description:
> + Some SoCs do not support enhance_rx, need set correct latch-ck to avoid
> + data crc error caused by stop clock(fifo full) Valid range = [0:0x7].
> + if not present, default value is 0.
> + applied to compatible "mediatek,mt2701-mmc".
> +
> + resets:
> + maxItems: 1
> +
> + reset-names:
> + const: hrst
> +
> +required:
> + - compatible
> + - reg
> + - interrupts
> + - clocks
> + - clock-names
> +
> +examples:
> + - |
> + #include <dt-bindings/interrupt-controller/irq.h>
> + #include <dt-bindings/interrupt-controller/arm-gic.h>
> + #include <dt-bindings/clock/mt8173-clk.h>
> + mmc0: mmc@...30000 {
> + compatible = "mediatek,mt8173-mmc";
> + reg = <0x11230000 0x1000>;
> + interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_LOW>;
> + vmmc-supply = <&mt6397_vemc_3v3_reg>;
> + vqmmc-supply = <&mt6397_vio18_reg>;
> + clocks = <&pericfg CLK_PERI_MSDC30_0>,
> + <&topckgen CLK_TOP_MSDC50_0_H_SEL>;
> + clock-names = "source", "hclk";
> + pinctrl-names = "default", "state_uhs";
> + pinctrl-0 = <&mmc0_pins_default>;
> + pinctrl-1 = <&mmc0_pins_uhs>;
> + assigned-clocks = <&topckgen CLK_TOP_MSDC50_0_SEL>;
> + assigned-clock-parents = <&topckgen CLK_TOP_MSDCPLL_D2>;
> + hs400-ds-delay = <0x14015>;
> + mediatek,hs200-cmd-int-delay = <26>;
> + mediatek,hs400-cmd-int-delay = <14>;
> + mediatek,hs400-cmd-resp-sel-rising;
> + };
> +
> +...
> --
> 2.18.0
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